Directional control of surface rolling molecules exploiting non-uniform heat-induced substrates

2020 ◽  
Vol 22 (46) ◽  
pp. 26887-26900
Author(s):  
Alireza Nemati ◽  
Hossein Nejat Pishkenari ◽  
Ali Meghdari ◽  
Shuzhi Sam Ge
Keyword(s):  
Temperature Gradient ◽  
Diffusive Motion ◽  
Uniform Heat ◽  
Directional Control ◽  
Directional Motion

Exploiting a surface subjected to a temperature gradient to convert the diffusive motion of nanocars to guided directional motion.

scholarly journals Directional control of a processive molecular hopper

Science ◽  
2018 ◽  
Vol 361 (6405) ◽  
pp. 908-912 ◽  
Author(s):  
Yujia Qing ◽  
Sandra A. Ionescu ◽  
Gökçe Su Pulcu ◽  
Hagan Bayley
Keyword(s):  
Electric Field ◽  
Molecular Motion ◽  
External Control ◽  
Nanopore Sequencing ◽  
End Points ◽  
Dna Molecule ◽  
Directional Control ◽  
Directional Motion ◽  
The Individual

Intrigued by the potential of nanoscale machines, scientists have long attempted to control molecular motion. We monitored the individual 0.7-nanometer steps of a single molecular hopper as it moved in an electric field along a track in a nanopore controlled by a chemical ratchet. The hopper demonstrated characteristics desired in a moving molecule: defined start and end points, processivity, no chemical fuel requirement, directional motion, and external control. The hopper was readily functionalized to carry cargos. For example, a DNA molecule could be ratcheted along the track in either direction, a prerequisite for nanopore sequencing.

Plane Thermal Stress at an Insulated Hole Under Uniform Heat Flow in an Orthotropic Medium

1967 ◽  
Vol 34 (1) ◽  
pp. 133-136 ◽  
Author(s):  
W. T. Chen
Keyword(s):  
Thermal Stress ◽  
Steady State ◽  
Temperature Distribution ◽  
Heat Flow ◽  
Temperature Gradient ◽  
Stress Field ◽  
Plane Stress ◽  
Orthotropic Medium ◽  
Variable Technique ◽  
Uniform Heat

When a uniform heat flow in an infinite orthotropic solid is disturbed by the presence of a long circular insulated cavity, local intensification of the temperature gradient occurs in the neighborhood of the cavity. This report describes a study of the stress field induced by the temperature distribution. The linear plane (plane stress or plane strain) thermoelastic problem is solved by using the complex variable technique. The analysis may also be used for other steady-state thermal stress problems in an orthotropic medium.

Directional motion categorization by pigeons

2003 ◽  
Author(s):  
Angie Koban ◽  
Robert Cook ◽  
Joel Fagot
Keyword(s):  
Directional Motion

Long-Term Correlations In Diffusive Motion Of Water Molecules And Rare Gas Atoms In Helium And Argon Aqueous Solutions

2015 ◽  
Vol 60 (8) ◽  
pp. 757-763 ◽  
Author(s):  
V.P. Voloshin ◽  
◽  
G.G. Malenkov ◽  
Yu.I. Naberukhin ◽  
◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Rare Gas ◽  
Water Molecules ◽  
Diffusive Motion ◽  
Rare Gas Atoms
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